Research writing taught me to distinguish between an overall result, people's individual experiences and the way a proposal is carried out.
A case can illustrate a problem without representing every situation. Two changes happening together do not establish that one caused the other. A report about what happened to participants still leaves questions about how those changes came about.
I therefore try to ask what a piece of evidence can support before deciding how strong a conclusion to draw.
That habit applies to project descriptions as well. Work completed, observations made and ideas still to be tested each need an appropriate basis.